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Finding the Fourth Proportional to 71,379.70, 98,505.93 and 39,552.10

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Solution

The fourth proportional to 71,379.70, 98,505.93 and 39,552.10 is: 54,582.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,379.70 : 98,505.93 = 39,552.10 : x
  2. Step 2: Convert to fraction form
    71,379.70/98,505.93 = 39,552.10/x
  3. Step 3: Cross multiply
    71,379.70x = 98,505.93 × 39,552.10
  4. Step 4: Simplify right side
    71,379.70x = 3,896,116,393.95
  5. Step 5: Solve for x
    x = 3,896,116,393.95/71,379.70
  6. Step 6: Final answer
    x = 54,582.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.